Portable internal combustion engine and tools



FIG. 1 is a left side elevational view of a portable internal combustion engine, showing our new design;

FIG. 2 is a right side elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a rear elevational view thereof; and

FIG. 6 is a front elevational view thereof. 

The ornamental design for a portable internal combustion engine and tools, as shown and described. 